Finding the Fourth Proportional to 152,724.59, 210,756.71 and 84,740.10

Step by Step Solution

1. Step 1: Write the proportion equation
   152,724.59 : 210,756.71 = 84,740.10 : x
2. Step 2: Convert to fraction form
   152,724.59/210,756.71 = 84,740.10/x
3. Step 3: Cross multiply
   152,724.59x = 210,756.71 × 84,740.10
4. Step 4: Simplify right side
   152,724.59x = 17,859,544,257.37
5. Step 5: Solve for x
   x = 17,859,544,257.37/152,724.59
6. Step 6: Final answer
   x = 116,939.55